一个基础的双栈带括号的基础计算器，通过QT 5.12实现可视化界面。
A basic double stack bracketed basic calculator, through QT 5.12 to achieve a visual interface. (2020-12-13, QT, 294KB, 下载0次)
注册登录服务平台，平台内有娱乐区：音乐，视频，画板，相册。
办公区：记事本，计算器，秒表，网络调试工具。
Register and log in to the service platform. There are entertainment areas in the platform: music, video, picture board, photo album.
Office area: Notepad, calculator, stopwatch, network debugging tools. (2020-03-21, QT, 6685KB, 下载0次)